drivers/usb/serial/qcserial.c

   1 /*
   2  * Qualcomm Serial USB driver
   3  *
   4  *      Copyright (c) 2008 QUALCOMM Incorporated.
   5  *      Copyright (c) 2009 Greg Kroah-Hartman <gregkh@suse.de>
   6  *      Copyright (c) 2009 Novell Inc.
   7  *
   8  *      This program is free software; you can redistribute it and/or
   9  *      modify it under the terms of the GNU General Public License version
  10  *      2 as published by the Free Software Foundation.
  11  *
  12  */
  13
  14 #include <linux/tty.h>
  15 #include <linux/tty_flip.h>
  16 #include <linux/usb.h>
  17 #include <linux/usb/serial.h>
  18 #include <linux/slab.h>
  19 #include "usb-wwan.h"
  20
  21 #define DRIVER_AUTHOR "Qualcomm Inc"
  22 #define DRIVER_DESC "Qualcomm USB Serial driver"
  23
  24 static int debug;
  25
  26 static const struct usb_device_id id_table[] = {
  27         {USB_DEVICE(0x05c6, 0x9211)},   /* Acer Gobi QDL device */
  28         {USB_DEVICE(0x05c6, 0x9212)},   /* Acer Gobi Modem Device */
  29         {USB_DEVICE(0x03f0, 0x1f1d)},   /* HP un2400 Gobi Modem Device */
  30         {USB_DEVICE(0x03f0, 0x201d)},   /* HP un2400 Gobi QDL Device */
  31         {USB_DEVICE(0x04da, 0x250d)},   /* Panasonic Gobi Modem device */
  32         {USB_DEVICE(0x04da, 0x250c)},   /* Panasonic Gobi QDL device */
  33         {USB_DEVICE(0x413c, 0x8172)},   /* Dell Gobi Modem device */
  34         {USB_DEVICE(0x413c, 0x8171)},   /* Dell Gobi QDL device */
  35         {USB_DEVICE(0x1410, 0xa001)},   /* Novatel Gobi Modem device */
  36         {USB_DEVICE(0x1410, 0xa008)},   /* Novatel Gobi QDL device */
  37         {USB_DEVICE(0x0b05, 0x1776)},   /* Asus Gobi Modem device */
  38         {USB_DEVICE(0x0b05, 0x1774)},   /* Asus Gobi QDL device */
  39         {USB_DEVICE(0x19d2, 0xfff3)},   /* ONDA Gobi Modem device */
  40         {USB_DEVICE(0x19d2, 0xfff2)},   /* ONDA Gobi QDL device */
  41         {USB_DEVICE(0x1557, 0x0a80)},   /* OQO Gobi QDL device */
  42         {USB_DEVICE(0x05c6, 0x9001)},   /* Generic Gobi Modem device */
  43         {USB_DEVICE(0x05c6, 0x9002)},   /* Generic Gobi Modem device */
  44         {USB_DEVICE(0x05c6, 0x9202)},   /* Generic Gobi Modem device */
  45         {USB_DEVICE(0x05c6, 0x9203)},   /* Generic Gobi Modem device */
  46         {USB_DEVICE(0x05c6, 0x9222)},   /* Generic Gobi Modem device */
  47         {USB_DEVICE(0x05c6, 0x9008)},   /* Generic Gobi QDL device */
  48         {USB_DEVICE(0x05c6, 0x9201)},   /* Generic Gobi QDL device */
  49         {USB_DEVICE(0x05c6, 0x9221)},   /* Generic Gobi QDL device */
  50         {USB_DEVICE(0x05c6, 0x9231)},   /* Generic Gobi QDL device */
  51         {USB_DEVICE(0x1f45, 0x0001)},   /* Unknown Gobi QDL device */
  52         {USB_DEVICE(0x413c, 0x8185)},   /* Dell Gobi 2000 QDL device (N0218, VU936) */
  53         {USB_DEVICE(0x413c, 0x8186)},   /* Dell Gobi 2000 Modem device (N0218, VU936) */
  54         {USB_DEVICE(0x05c6, 0x9224)},   /* Sony Gobi 2000 QDL device (N0279, VU730) */
  55         {USB_DEVICE(0x05c6, 0x9225)},   /* Sony Gobi 2000 Modem device (N0279, VU730) */
  56         {USB_DEVICE(0x05c6, 0x9244)},   /* Samsung Gobi 2000 QDL device (VL176) */
  57         {USB_DEVICE(0x05c6, 0x9245)},   /* Samsung Gobi 2000 Modem device (VL176) */
  58         {USB_DEVICE(0x03f0, 0x241d)},   /* HP Gobi 2000 QDL device (VP412) */
  59         {USB_DEVICE(0x03f0, 0x251d)},   /* HP Gobi 2000 Modem device (VP412) */
  60         {USB_DEVICE(0x05c6, 0x9214)},   /* Acer Gobi 2000 QDL device (VP413) */
  61         {USB_DEVICE(0x05c6, 0x9215)},   /* Acer Gobi 2000 Modem device (VP413) */
  62         {USB_DEVICE(0x05c6, 0x9264)},   /* Asus Gobi 2000 QDL device (VR305) */
  63         {USB_DEVICE(0x05c6, 0x9265)},   /* Asus Gobi 2000 Modem device (VR305) */
  64         {USB_DEVICE(0x05c6, 0x9234)},   /* Top Global Gobi 2000 QDL device (VR306) */
  65         {USB_DEVICE(0x05c6, 0x9235)},   /* Top Global Gobi 2000 Modem device (VR306) */
  66         {USB_DEVICE(0x05c6, 0x9274)},   /* iRex Technologies Gobi 2000 QDL device (VR307) */
  67         {USB_DEVICE(0x05c6, 0x9275)},   /* iRex Technologies Gobi 2000 Modem device (VR307) */
  68         {USB_DEVICE(0x1199, 0x9000)},   /* Sierra Wireless Gobi 2000 QDL device (VT773) */
  69         {USB_DEVICE(0x1199, 0x9001)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  70         {USB_DEVICE(0x1199, 0x9002)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  71         {USB_DEVICE(0x1199, 0x9003)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  72         {USB_DEVICE(0x1199, 0x9004)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  73         {USB_DEVICE(0x1199, 0x9005)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  74         {USB_DEVICE(0x1199, 0x9006)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  75         {USB_DEVICE(0x1199, 0x9007)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  76         {USB_DEVICE(0x1199, 0x9008)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  77         {USB_DEVICE(0x1199, 0x9009)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  78         {USB_DEVICE(0x1199, 0x900a)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
  79         {USB_DEVICE(0x16d8, 0x8001)},   /* CMDTech Gobi 2000 QDL device (VU922) */
  80         {USB_DEVICE(0x16d8, 0x8002)},   /* CMDTech Gobi 2000 Modem device (VU922) */
  81         { }                             /* Terminating entry */
  82 };
  83 MODULE_DEVICE_TABLE(usb, id_table);
  84
  85 static struct usb_driver qcdriver = {
  86         .name                   = "qcserial",
  87         .probe                  = usb_serial_probe,
  88         .disconnect             = usb_serial_disconnect,
  89         .id_table               = id_table,
  90         .suspend                = usb_serial_suspend,
  91         .resume                 = usb_serial_resume,
  92         .supports_autosuspend   = true,
  93 };
  94
  95 static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
  96 {
  97         struct usb_wwan_intf_private *data;
  98         int retval = -ENODEV;
  99         __u8 nintf;
 100         __u8 ifnum;
 101
 102         dbg("%s", __func__);
 103
 104         nintf = serial->dev->actconfig->desc.bNumInterfaces;
 105         dbg("Num Interfaces = %d", nintf);
 106         ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
 107         dbg("This Interface = %d", ifnum);
 108
 109         data = serial->private = kzalloc(sizeof(struct usb_wwan_intf_private),
 110                                          GFP_KERNEL);
 111         if (!data)
 112                 return -ENOMEM;
 113
 114         spin_lock_init(&data->susp_lock);
 115
 116         switch (nintf) {
 117         case 1:
 118                 /* QDL mode */
 119                 if (serial->interface->num_altsetting == 2) {
 120                         struct usb_host_interface *intf;
 121
 122                         intf = &serial->interface->altsetting[1];
 123                         if (intf->desc.bNumEndpoints == 2) {
 124                                 if (usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
 125                                     usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
 126                                         dbg("QDL port found");
 127                                         retval = usb_set_interface(serial->dev, ifnum, 1);
 128                                         if (retval < 0) {
 129                                                 dev_err(&serial->dev->dev,
 130                                                         "Could not set interface, error %d\n",
 131                                                         retval);
 132                                                 retval = -ENODEV;
 133                                         }
 134                                         return retval;
 135                                 }
 136                         }
 137                 }
 138                 break;
 139
 140         case 4:
 141                 /* Composite mode */
 142                 if (ifnum == 2) {
 143                         dbg("Modem port found");
 144                         retval = usb_set_interface(serial->dev, ifnum, 0);
 145                         if (retval < 0) {
 146                                 dev_err(&serial->dev->dev,
 147                                         "Could not set interface, error %d\n",
 148                                         retval);
 149                                 retval = -ENODEV;
 150                         }
 151                         return retval;
 152                 }
 153                 break;
 154
 155         default:
 156                 dev_err(&serial->dev->dev,
 157                         "unknown number of interfaces: %d\n", nintf);
 158                 return -ENODEV;
 159         }
 160
 161         return retval;
 162 }
 163
 164 static struct usb_serial_driver qcdevice = {
 165         .driver = {
 166                 .owner     = THIS_MODULE,
 167                 .name      = "qcserial",
 168         },
 169         .description         = "Qualcomm USB modem",
 170         .id_table            = id_table,
 171         .usb_driver          = &qcdriver,
 172         .num_ports           = 1,
 173         .probe               = qcprobe,
 174         .open                = usb_wwan_open,
 175         .close               = usb_wwan_close,
 176         .write               = usb_wwan_write,
 177         .write_room          = usb_wwan_write_room,
 178         .chars_in_buffer     = usb_wwan_chars_in_buffer,
 179         .attach              = usb_wwan_startup,
 180         .disconnect          = usb_wwan_disconnect,
 181         .release             = usb_wwan_release,
 182 #ifdef CONFIG_PM
 183         .suspend             = usb_wwan_suspend,
 184         .resume              = usb_wwan_resume,
 185 #endif
 186 };
 187
 188 static int __init qcinit(void)
 189 {
 190         int retval;
 191
 192         retval = usb_serial_register(&qcdevice);
 193         if (retval)
 194                 return retval;
 195
 196         retval = usb_register(&qcdriver);
 197         if (retval) {
 198                 usb_serial_deregister(&qcdevice);
 199                 return retval;
 200         }
 201
 202         return 0;
 203 }
 204
 205 static void __exit qcexit(void)
 206 {
 207         usb_deregister(&qcdriver);
 208         usb_serial_deregister(&qcdevice);
 209 }
 210
 211 module_init(qcinit);
 212 module_exit(qcexit);
 213
 214 MODULE_AUTHOR(DRIVER_AUTHOR);
 215 MODULE_DESCRIPTION(DRIVER_DESC);
 216 MODULE_LICENSE("GPL v2");
 217
 218 module_param(debug, bool, S_IRUGO | S_IWUSR);
 219 MODULE_PARM_DESC(debug, "Debug enabled or not");